Detector-bar.



L. DAY.

DETECTOR BAR.

APPLICATlON FILED JULY 26. I911.

Patented Apr. 10,1917.

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I IHII" I L. DAY.

DETECTOR BAR.

APPLICATION FILED JULY 26, 1911.

L g flfio Patented Ap1'.l0,1917.

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LEONARD DAY, OF INEVV YORK, N. Y., ASSIGNOB TO FEDERAL SIGNAL COMPANY, A.

Application filed July 26, 1911.

To all w/wm it may concern:

Be it known that I, LEONARD DAY, a citizen of the United States, and a resident of the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Detector- Bars, of which the following is a specification.

This invention relates to detector bars. The invention seeksto provide a detector bar for railways that shall be convenient and reliable in its operation, economical to manufacture and which shall have the capacity of detecting the presence of a car wheel by contact with the side face of the wheel.

()ne characteristic feature of the invention is that the bar has a longitudinal movement and, at the same time, is so arranged as to have a tilting movement inward against the side face of a wheel. Another characteristic feature of the invention is that the bar is adapted to move into two detecting positions, one of said detecting positions being against the tread of a wheel and the other detecting position being against the side face of a wheel, the bar presenting its detecting edge against the side face of the wheel by a tilting movement. Another characteristic feature of the invention is that the bar is carried on supports, preferably pivotal, which supports rise to lift the bar, the bar being then tilted inward, in response to said lifting movement, against the side face of a wheel.

In the accompanying drawings forming part of this specification, the invention is illustrated in two of the various forms in which the invention is capable of being embodied. In the drawings,

Figure 1 is a side elevation of a detector bar associated with the track rail.

Fig. 2 is an end view of the detector bar taken on the line 22 of Fig. 1.

Fig. 3 is a side elevation of another form of detector bar and embodying the invention.

Fig. 4 is an end View of the structure shown in Fig. 3, the rail being in section and also the detectorbar proper. I

eferring now more particularly to the structure shown in the drawings, 1 is a clip secured to the rail 2 by the hook bolts 3 and a and the stud bolt 5. The clip is made Specification of Letters Patent.

Patented Apr. in, rear. Serial No. 640,597.

in channel form having guide plates 6 and 7 across which extends a bolt or stud 8 carrying the roller 9. 10 is the detector bar proper to which are secured the brackets 11 and 12. These brackets are pivotally mounted on stud bolts 13 and 14 which pass through the brackets and are fixed in the opposite ends of the motion plate 15 which supportsthe bar. Extending inward from the lower sides of the brackets and integral therewith are arms 16 and 17 which are bifurcated at their inner ends to receive the rollers 18 and 19 which they carry. These arms 16 and 17 are in close proximity to" the rail and beneath the head thereof.

he bar is arranged to have a longitudinal movement by suitable means such as those commonly now in use. In the normal position of the detector bar, its upper or de tecting edge is in proximity to the rail head and beneath its upper surface, as shown in Figs. 1 and 2. IVhen the bar is given a longitudinal movement from right to left, the motion plate rides on the roller 9 and between the guide plates 6 and 7.

In this longitudinal movement the inclined cam face 20 of the motion plate rides over the roller 9 and thereby causes the bar to rise so as to strike the tread of the car wheel on the rail, if the tread of the wheel is projecting beyond the rail head. This brings the bar into its first detecting position. If the wheel on the rail 2 is not projecting beyond the head of the rail, the longitudinal movement of the bar continues, and as the cam face 20 continues riding on the roller 9, the bar rises still higher. But, at the same time, it is tilted inward by the arms 16 and 17 whose rollers have come against the under side of the rail head, thereby causing the barto be tilted inward over the rail head. Thus, the-bar is brought into its second detecting position. If the wheel on the rail 2 does not project beyond the side of the railhead, the bar will strike the side face of the wheel before it reaches the limit of its tilting movement. The continued longitudinal movement of the bar then causes the horizontal cam face 21 and the inclined cam face 22 to ride over the roller 9. This causes the bar to travel along for a short distance in its extreme upper position and then to descend to its lower position. A reverse longitudinal movement of the bar thereafter causes the bar to rise and fall in the same way, returning to its initial position.

In Figs. 3 and f the bar is supported on swinging parallel arms 23 and 2st mounted on the pivot bolts 25 and 26 secured to the clips 27 and 28. The bar is fixed to brackets, such as 29, each of which is pivotally mounted on the rod 30 whose ends are fixed in socket pieces 31 and 32 pivotally secured to the upper ends of the arms 23 and 2A. The bracket 29 has rigidly connected with it an inwardly projecting arm 33 carrying a roller 84 similar to the arrangement shown in Figs. 1 and 2.

The movement of the bar shown in Figs. 3 and 4: is similar to that described with reference to Figs. 1 and 2, but in Figs. 3 and l, the upward movement of the bar is produced by the parallel arms 23 and 2A. The tilting movement is produced by the arm 23 abutting against the under side of the rail head similar to that produced by the arms 16 and 17 in Figs. 1 and 2.

It will, of course, be understood that the bar is provided with a plurality of motion plates or parallel arms, and their associated parts, the number varying with the length of the bar and the requirements of good practice.

- WVhat I claim and desire to secure by Letters Patent is 1. A longitudinally moving detector bar; a pivotal support for said bar adapted to move longitudinally therewith; and means for causing said bar to tilt inward on its pivotal support against the side face of a wheel.

2. A longitudinally moving detector bar adapted to move into two detecting positions, one position being against the tread of a wheel and another position being against the side face of a wheel and horizontal pivots on which the bar is mounted so as to have the capacity, during its movement, to tilt against the side face of a wheel.

3. A longitudinally moving detector bar adapted to move into two detecting positions, one position being against the tread of a wheel and another position being against the side face of a wheel; a pivotal support for said bar adapted to move longitudinally therewith; and means for causing said bar to tilt inward on its pivotal support against the side face of a wheel.

4. A longitudinally moving detector bar; means for exerting an upward thrust on said bar; and means for-causing said bar to tilt inward against the side face of a wheel in response to said upward thrust, said means comprising one or more arms carried by said bar and arranged to engage the under side of the rail head.

5. A detector bar; pivotal supports therefor; lifting means for said pivotal supports;

and means for tilting the bar inwardagainst the side face of a car wheel in response to said lifting means. a

6. A detector bar; pivotal supports therefor; lifting means for said pivotal supports;

and arms carried by said bar arranged to tilt the bar inward against the side face of a car wheel in response to said lifting means.

. 7 A detector bar; pivotal supports therefor; lifting means for said pivotal supports; and arms carried by said bar arranged to strike the underside of the railhead and thereby tilt the bar inward against the side face of a car wheel in response to said lifting means. 7

8. A detector bar; supports therefor; lifting means for said supports; and arms carried by said bar arranged to strike the under side of the rail head and thereby tilt the bar inward against the side face of a car wheel in response to said lifting means.

9. A longitudinally moving detector bar adapted to move into two tions, one position being against the tread of a wheel and another position being against the side face of a wheel; parallel arms pivoted to and supporting said bar and arranged to impart an up and ment to the bar during its longitudinal movement; and means for guiding the bar inward over the head of a rail during its movement.

10. A detector bar adapted to move into two detecting positions, one position being against the tread of a wheel and another position being against the side face of a wheel; means comprising swinging arms for moving said bar into one of its detecting positions; and means for guiding said bar into its other detecting position during its movement.

11. A longitudinally moving detector bar adapted to move into two detecting positions, one position being against the tread of a wheel and another position being against the side face of a wheel; means comprising swinging arms for moving said bar into one of its detecting positions; and means for guiding said bar into its other detecting position during its movement.

12. A detectorbar adapted to move over the head of the rail into a tion against the side face of a car wheel, in combination with arms arranged to swing longitudinally of the rail to carry the bar above and below the horizontal level of the rail head, pivots extending parallel with the bar and connecting said bar and arms, and provisions for moving the bar inward on said pivots during its movement by said arms and against the side face of 'a wheel.

13. A longitudinally moving detector bar adapted to move over the head of the rail into a detecting position against the side face of a car wheel, in combination with detecting posidown movearms arranged to swing longitudinally of the In testimony whereof, I have signed my rail to carry the bar above and below the name to this specification, in the presence 1% horizontal level of the rail head, pivots eX- of two subscribing witnesses.

tending parallel with the bar and connect- 5 ing said bar and arms, and provisions for LEONARD moving the bar inward on said pivots dur- Witnesses: ing its movement by said arms and against IDA G. GILMORE, the side face of a wheel. FLORENCE JACKSON. 

